Genome sequence of Kobresia littledalei, the first chromosome-level genome in the family Cyperaceae

作者：Muyou Can, Wei Wei, Hailing Zi, Magaweng Bai, Yunfei Liu, Dan Gao, Dengqunpei Tu, Yuhong Bao, Lı Wang, Shaofeng Chen, Xing Zhao, Guangpeng Qu · 发表于：Scientific Data · 年份：2020 · DOI：10.1038/s41597-020-0518-3 · 被引用次数：44 · 研究领域：Botany, Ecology, and Taxonomy Studies、Plant Taxonomy and Phylogenetics、Genetic diversity and population structure

Kobresia plants are important forage resources in the Qinghai-Tibet Plateau and are essential in maintaining the ecological balance of grasslands. Therefore, it is beneficial to obtain Kobresia genome resources and study the adaptive characteristics of Kobresia plants in the Qinghai-Tibetan Plateau. We assembled the genome of Kobresia littledalei C. B. Clarke, which was about 373.85 Mb in size. 96.82% of the bases were attached to 29 pseudo-chromosomes, combining PacBio, Illumina and Hi-C sequencing data. Additional investigation of the annotation identified 23,136 protein-coding genes. 98.95% of these were functionally annotated. According to phylogenetic analysis, K. littledalei in Cyperaceae separated from Poaceae about 97.6 million years ago after separating from Ananas comosus in Bromeliaceae about 114.3mya. For K. littledalei, we identified a high-quality genome at the chromosome level. This is the first time a reference genome has been established for a species of Cyperaceae. This genome will help additional studies focusing on the processes of plant adaptation to environments with high altitude and cold weather.